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- Query: `62 FR 49171`
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- Exported: 2026-08-23T22:33:23.799Z

## 1. Hazardous Materials: Cargo Tank Motor Vehicles in Liquefied Compressed Gas Service; Advisory Guidance for Leak Testing Discharge Systems

**Citation:** 62 FR 49171  
**Type / status:** rulemaking / historical  
**Agency:** Research and Special Programs Administration  
**Effective / published:** Not stated / 1997-09-19

On August 18, 1997, RSPA published in the Federal Register a final rule adopting certain safety standards applicable to cargo tank motor vehicles used in liquefied compressed gas service. This advisory guidance identifies a potential safety problem when leak testing a cargo tank motor vehicle's discharge system and clarifies a pressure test requirement for new or repaired transfer hoses. It is responsive to a petition for reconsideration and a request for clarification.

### Provenance

- Official: Yes
- Source: <https://www.federalregister.gov/documents/1997/09/19/97-24974/hazardous-materials-cargo-tank-motor-vehicles-in-liquefied-compressed-gas-service-advisory-guidance>
- Source ID: `federal-register`
- SHA-256: `9bb4823485a206ef447c375f4faa0edcdda8e6a8974c917954e979447b9f73f2`
- Retrieved: 2026-08-20T06:04:51.294Z
- Document slug: `federal-register-97-24974`
- Related records: 1